Recently many embroidery enthusiasts are searching for Trilobal Poly Thread. Trilobal refers to the shape of the fibers that make up the thread. Standard poly fibers are round, but Trilobal fibers are like a three pointed star. This provides a lot more surface to reflect the light and result in thread that has a high sheen – often as much as rayon! It is also a stronger thread which means less thread breaks. Elongation (stretch) is also an important factor in choosing thread. Lower elongation percentages result in the reduction or elimination of puckering and looping problems. Lower elongation also allows you to decrease the tension on your machine. Some poly threads have a stretch factor up to 30%! Our new BFC poly Thread is made from Trilobal Poly fibers and has a very low elongation of 17%-20%.